Jim... On Weather Underground does it have the ability to update every 2-3 seconds, like with rapidfire?
RainWise has developed a way for the IP-100 interface to send data directly to their servers as fast as every 3 seconds. This means that you will now be able to post your data to the Weather Underground and make use of their near real-time display features. All of this will happens over and above your existing RainwiseNet data feed and without additional cost.
You can read more here:http://www.rainwise.com/about/news/wunderground.php